On April, 11 at 6 p.m. you will be able to see one of the most exciting Barcelona activities, Barcelona pillow fights which are held on Catalonia Square (Plaça de Catalunya). It is a great fun both to watch and to take part in this event. The only thing you need is a pillow without buttons or zippers. And you also should know some simple rules of the "war". You cannot beat those having no pillows. It may seem strange but not every person near Plaça de Catalunya is eager to fight some of them are just passers-by.
The idea of those pillow fights came from London and spread all over the world. Nowadays pillow fights are held in Chicago, Berlin, Athens, Buenos Aires, Barcelona and some other cities. There is even a special website for pillow fight lovers.